The OMRON platinum wireless upper arm blood pressure monitor can be used with at least two users, and for detecting irregular heartbeats. It will store up to 200 (100 per user), but when used with the free OMRON connect app, it supports unlimited users and stores unlimited. Conveniently view your trend graphs and charts, and share as needed with your family, caregivers, or physicians. The OMRON Connect app works with iOS and android devices, as well as Alexa using the OMRON health skill.